Driving mechanism for sewing-machines



No Model.)

- .110. LANDES.

' DRIVING MECHANISM FOR SEWING MACHINES. No. 288,643. Patented Nov. 20,1883.

Y UNITED- Srnrss PATENT Genres.

JACOB o LANDES, or SOUDERTON, PENNSYLVANIA.

DRIViNG MECHANISM FOR SEWING-MACHINES;

SPECIFICATION forming part of Letters Patent No. 288,643, dated NovemberE0, 1883 l Application filed August 18, 1883. (No model.)

To all, whom it may concern;

, Be it known that I, Jnoon O. LANDES, of Souderton, in the county ofMontgomery and State of Pennsylvania, have invented certain new anduseful Improvements in Driving Mechanism for Sewing-Machines; and I dohereby declare the following to be a full, clear,

' and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in driving mechanism forsewing-machines, the object of the same being to provide means wherebythe machine will always start in the proper direction, regardless of thedirection in which the treadle is first pressed, and at the same time todispense with dead-centers; fur-' ther, to provide means for my improvedmachine by which the same may be suddenly and quicklystopped; andwiththese ends in view my invention consists in certain details of construction and combinations of parts, as will be hereinafter described,and pointed out in the claims.

In the drawings, Figure l is a viewof my improvement in side elevationwith the brake detached. Fig. 2 is a detached view of several of theparts. Fig. 8 is a detached view of the eter, as shown at b.

drive-wheel in end elevation. Fig. 4 is a view of the brake. Fig. 5shows the construction of the same when used on the wheel above thetable.

A represents the drivewheel, mounted on the spindle, the latter suitablymounted in a frame, S, the said spindle being provided on each side ofsaid wheel with a square shoulder, a, and having its end reduced indiamis pivotally secured the bent ratchet-lever F, the opposite end ofwhich is pivotally secured to the upper end of the pitman G, whichlatter is secured to the treadle H. The remaining projections on thedisks 0 and E are securely fastened together and retained on the spindleby the key K. \Vhen one end of the treadle H is pressed downwardly, thepitman on the opposite end of the treadle and connecting with theratchet-lever on the opposite side of the wheel will lift the said leverF just high enough to clear the teeth of the ratchet-wheel, and as saidlever is connected to the projections on one side of the disks 0 and Ethe latter will turn on the spindle B until the pitman begins todescend, which then draws the ratchet-lever down on the wheel D, and asthe. teeth of the lever and wheel interlock-the wheel D is drawn aroundwith the descending pitman, which draws the drive-wheel with it. Insteadof employing a clutch-wheel and lever, a friction-wheel might besubstituted therefor and with the same result. It will be observed thatby this construction and arrangement of v parts the wheel cannot berevolved in the wrong direction by power transmitted through the pitman,the latter necessarily turning the wheel in one direction under allcircumstances. Again, by this construction there are no dead-centers,either one or the other of the pitmen being ever ready to turn theratchet-wheel D; also, ahigh rate of speed may be obtained, there beingthe minimum amount of friction created between the parts,

the parts running lightly and steadily. Again, it will be noticed thatthe speed of the machine cannot be checked by means of the treadle. Tosupply this deficiency, I have provided means whereby the machine may beeffectually and instantly stopped at the will of the operator.

Beneath the table L, I secure, by means of screw-eyes or staples, a rod,M, lengthwise of the table, the end near the wheel A being bent down, asshown, bringing the end near the pe riphery of said wheel, this end ofthe rod being provided with a removable block of rubber or othersuitable material, adapted, when desired, to bear against the wheel andlessen the speed thereof, or stop it altogether.

2 assess N represents a push-arm,preferably secured I mounted upon asuitable spindle, of disks se to the rod M by a set-screw, adapting itto be fastened to the rod at any point to suit the operator. This arm ishung downwardly, and when it is desired to stop the machine or lessenthe speed thereof the operator simply presses against the said arm, thusforcing the rubber block on the end of the rod M against the peripheryof the wheel, which has the desired effect. When the pressure isreleased from the arm N,a spiral spring secured to the table androdforces the rod back in place and prevents the block from coming incontact with the wheel.

Fig. 5 is a view showing one method of attaching the brake to the wheelabove the table, in which P represents a bell-crank lever fulcrumed at19. When the rod M is forced against the lower end of the bell-crank,the otherend of the same is forced up, which also raises the rod Qagainst the wheel R.

' I make no claim in this application to the brake mechanism shown anddescribed, but reserve the right to claim the same in a futureapplication.

My invention is exceedingly simple and economical in construction, isefficient in use, saving both time and trouble, may be attached to anystyle or make of machine, and can be manufactured at a small initialcost, and is equally well applicable to lathes, saws, and othermachinery operated by a treadle as it is to sewing-machines.

It is evident that slight changes in the construction and arrangement ofparts might be resorted to without departing from the spirit of myinvention, and hence I would have it understood that I do not limitmyself to the exact-construction shown and described, but considermyself at liberty to make such changes as fall within the spirit andscope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Let ters Patent, is

1. The combination,with a drive-wheel, of a spindle upon which the wheelis mounted, disks and wheels secured on said spindle, levers to operatethe wheels, and pitmen secured to the levers, substantially as setforth.

' 2. The combination, with a drive wheel cured on said spindle,ratchet-wheels also secured to the spindle, levers to operate saidwheels, and pitmen secured to the levers, substantially as set forth.

3. The combination, with a drive wheel mounted upon a suitable spindle,of two disks mounted upon the spindle-one on each side of thedrive-wheelratchet-wheels, or their equivalents, located between the twodisks, 011 each side of the drive-wheel, levers adapted to operate saidratchet-wheels or their equivalents, and pitmen secured to the levers,substantially as set forth.

4. The combination, with a drive wheel mounted on a suitable spindle, oftwo disks loosely mounted upon the spindle one on each side of the drivewheelratchet wheels, or their equivalents, rigidly secured to spindlebetween the two disks 011 each side of the drive-wheel, levers pivotallysecured to disks and adapted to operate the wheels, and pitmen pivotallysecured to the said levers, sub stantially as set forth.

5. The combination, with a drive wheel mounted on a suitable spindle, oftwo disks loosely mounted on said spindleone on each side of thedrive-wheel-ratchet-wheels rigidly secured to the spindle between thetwo disks, on each side of the drive-wheel, ratchet-levers pivotallysecured to the disks and adapted to mesh with the ratchet-wheels, andpitmen secured to levers, substantially as set forth.

6. The combination, with a drive wheel mounted on a suitable spindle, oftwo disks loosely mounted upon the spindle-one on each side of thedrive-wheeland provided with lugs or projections, ratchet-wheels rigidlysecured between the disks, on each side of the drive-wheel, curvedratchet-levers pivotally secured to said projections and adapted to meshwith the ratchet-wheels, and pitmen secured to the levers, substantiallyas set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JACOB O. LANDES.

\Vitnesses:

J. D. MoYER, \VM. S. HEMSING.

